MRIs Can Be Safe for People With Heart Devices …

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- People with pacemakers or implantable defibrillators have long been told they can't undergo MRI scans. But a new study suggests that it can be safely done -- under the right conditions.

 Race May Play Role in Recurrent Stroke

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Strokes bring with them a heightened possibility of another attack, and new research suggests black patients may be at especially high risk for recurrence.

 Headaches Often Strike Before Strokes in Kids: Study

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Children are much more likely than adults to have a headache before an ischemic stroke, new research suggests.

 Bleeding Strokes Take Heavy Toll on Brain

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Survivors of the most deadly type of stroke face a higher risk for developing depression and dementia, new research suggests.

 For Stroke Survivors, Exercise Is Good for the Brain: Review

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- A structured exercise program can help stroke survivors recover not only physically but mentally as well, a new review says.

 Little Weight Gain in Pregnancy Tied to Schizophrenia Risk in Kids: Study

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Gaining too little weight during pregnancy may increase the odds that a child will develop schizophrenia later in life, Swedish researchers suggest.

 Unhealthy in Middle Age, Dementia in Old Age?

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Middle-aged men and women at risk for heart disease may also face a higher chance of dementia later in life, a new study suggests.

 Is Need for More Sleep a Sign of Pending Dementia?

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Seniors who begin sleeping more than nine hours a night may face a higher risk of dementia down the road, a new study suggests.

 Head Position Just After Stroke Doesn't Affect Recovery: Study

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- The way a patient's head is positioned by health care professionals right after a stroke doesn't seem to have any bearing on how well he or she will fare, new research indicates.

 Zika Infection Shrinks Testicles in Mice

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Zika virus can be sexually transmitted through semen, and a new mouse study could help explain why that occurs -- and how the virus might damage male fertility.

 'Off-Label' Antidepressants Common, But Where's the Evidence?

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Doctors often prescribe antidepressants to tackle conditions like migraine headaches for which they aren't technically approved. Now, researchers say such "off-label" usage mostly occurs without clear scientific evidence backing up the treatments.

 Spoiler Alert! Most People Don't Want to Know the Future

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Even if it were possible, most people wouldn't want a crystal ball to foresee the future, instead preferring to be kept in the dark, a new study contends.

 After Stroke, 'Blue' Light May Help Beat the Blues

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- Depression is always a danger for people recovering from a debilitating stroke. But new research suggests that tweaking a rehabilitation facility's lighting system may help patients keep depression at bay.

 ACL Tears on the Rise Among Kids, Especially Girls

WEDNESDAY, Feb. 22, 2017 (HealthDay News) -- As kids play sports like soccer and football with more frequency and force, many are damaging their knees, a new study finds.

 Health Highlights: Feb. 22, 2017

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

 Health Tip: Short on Sleep?

(HealthDay News) -- It may be tough to find enough hours to get everything checked off of your daily to-do list. But giving up sleep to get more done may do more harm than good.

 Health Tip: Get Your Mouth Healthy Before Cancer Treatment

(HealthDay News) -- You have many things on your mind before you start cancer treatment, but a visit to your dentist should be on your to-do list.

 U.S. Life Expectancy May Rise to Over 80 by 2030

TUESDAY, Feb. 21, 2017 (HealthDay News) -- By 2030, American women will live an average of more than 83 years, while men may reach an average of 80, a new study estimates.

 No, Your Cat Isn't a Threat to Your Mental Health

TUESDAY, Feb. 21, 2017 (HealthDay News) -- Cat owners can breathe a sigh of relief: Your feline's litter box likely won't put your family's mental health at risk.